EVGA GeForce GTX 550 Ti Superclocked 1024 MB GDDR5 PCI Express 2.0 2DVI/Mini-HDMI SLI Ready Graphics Card, 01G-P3-1557-KR GeForce GTX 550 Ti Superclocked with 981 MHz core clock PCI Express 2.0 1024 MB 192-bit 0.5ns GDDR5 memory 4514 MHz Effective Memory Clock and 1962 MHz Shader Clock 108.3 GB/sec Memory Bandwidth NVIDIA 2-way SLI ready 31.3 GT/s Texture Fill Rate DirectX 11 Support